Cassette holder



FIG. 1 is a perspective view of a cassette holder showing my new design;

FIG. 2 is an enlarged fragmentary perspective view thereof;

FIG. 3 is an exploded bottom perspective view thereof, the broken lines indicate environmental structure and form no part of the claimed design;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevational view, the rear being identical thereto;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for a cassette holder, as shown and described. 